<!DOCTYPE html>
<html lang="en" xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <meta charset="UTF-8">
    <title>login333</title>
</head>
<body>
<div th:if="${param.error}">
    用户名密码错误，要不去<a th:href="@{/}">首页</a>看看？
</div>
<div th:if="${param.logout}">
    您已经登陆
</div>
<form th:action="@{/login}" method="post">
    <div><label>用户名：<input type="text" name="username"></label></div>
    <div><label>密码: <input type="password" name="password"></label></div>
    <div><input type="submit" value="登陆"></div>
</form>
</body>
</html>